<!DOCTYPE html>

































































<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link rel="shortcut icon" type="image/x-icon" href="../../favicon.ico" />
<title>Using Hardware Devices | Android Developers</title>
<link href="../../assets/android-developer-docs-devguide.css" rel="stylesheet" type="text/css" />
<script src="../../assets/search_autocomplete.js" type="text/javascript"></script>
<script src="../../assets/jquery-resizable.min.js" type="text/javascript"></script>
<script src="../../assets/android-developer-docs.js" type="text/javascript"></script>
<script src="../../assets/prettify.js" type="text/javascript"></script>
<script type="text/javascript">
  setToRoot("../../");
</script>
<noscript>
  <style type="text/css">
    html,body{overflow:auto;}
    #body-content{position:relative; top:0;}
    #doc-content{overflow:visible;border-left:3px solid #666;}
    #side-nav{padding:0;}
    #side-nav .toggle-list ul {display:block;}
    #resize-packages-nav{border-bottom:3px solid #666;}
  </style>
</noscript>
</head>
<body class="gc-documentation">

  <div id="header">
      <div id="headerLeft">
          <a href="../../index.html" tabindex="-1"><img
              src="../../assets/images/bg_logo.png" alt="Android Developers" /></a>
          <ul id="header-tabs" class="guide">
    
	<li id="home-link"><a href="../../offline.html">
	
		<span class="en">Home</span>
		<span style="display:none" class="de">Startseite</span>
		<span style="display:none" class="es"></span>
		<span style="display:none" class="fr"></span>
		<span style="display:none" class="it"></span>
		<span style="display:none" class="ja">ホーム</span>
		<span style="display:none" class="zh-CN">主页</span>
		<span style="display:none" class="zh-TW">首頁</span>
	
	</a></li>
	<li id="sdk-link"><a href="../../sdk/index.html">
		<span class="en">SDK</span>
	</a></li>
	<li id="guide-link"><a href="../../guide/index.html" onClick="return loadLast('guide')">
	
		<span class="en">Dev Guide</span>
		<span style="display:none" class="de">Handbuch</span>
		<span style="display:none" class="es">Guía</span>
		<span style="display:none" class="fr">Guide</span>
		<span style="display:none" class="it">Guida</span>
		<span style="display:none" class="ja">開発ガイド</span>
		<span style="display:none" class="zh-CN">开发人员指南</span>
		<span style="display:none" class="zh-TW">開發指南</span>
	
	</a></li>
	<li id="reference-link"><a href="../../reference/packages.html" onClick="return loadLast('reference')">
	
		<span class="en">Reference</span>
		<span style="display:none" class="de">Referenz</span>
		<span style="display:none" class="es">Referencia</span>
		<span style="display:none" class="fr">Référence</span>
		<span style="display:none" class="it">Riferimento</span>
		<span style="display:none" class="ja">リファレンス</span>
		<span style="display:none" class="zh-CN">参考</span>
		<span style="display:none" class="zh-TW">參考資料</span>
	
	</a></li>
	<li id="resources-link"><a href="../../resources/index.html" onClick="return loadLast('resources')">
	
		<span class="en">Resources</span>
		<span style="display:none" class="de"></span>
		<span style="display:none" class="es"></span>
		<span style="display:none" class="fr"></span>
		<span style="display:none" class="it"></span>
    		<span style="display:none" class="ja"></span>
		<span style="display:none" class="zh-CN"></span>
		<span style="display:none" class="zh-TW"></span>
	
	</a></li>
	<li id="videos-link"><a href="../../videos/index.html" onClick="return loadLast('videos')">
	
		<span class="en">Videos</span>
		<span style="display:none" class="de"></span>
		<span style="display:none" class="es"></span>
		<span style="display:none" class="fr"></span>
		<span style="display:none" class="it"></span>
		<span style="display:none" class="ja">ビデオ</span>
		<span style="display:none" class="zh-CN"></span>
		<span style="display:none" class="zh-TW"></span>
	
	</a></li>
	<li><a href="http://android-developers.blogspot.com" onClick="return requestAppendHL(this.href)">
	
		<span class="en">Blog</span>
		<span style="display:none" class="de"></span>
		<span style="display:none" class="es"></span>
		<span style="display:none" class="fr"></span>
		<span style="display:none" class="it"></span>
		<span style="display:none" class="ja">ブログ</span>
		<span style="display:none" class="zh-CN">博客</span>
		<span style="display:none" class="zh-TW">網誌</span>
	
	</a></li>


     
</ul>
     
      </div>
      <div id="headerRight">
          <div id="headerLinks">
          
          <a href="http://www.android.com">Android.com</a>
          </div>
  <div id="search" >
      <div id="searchForm">
          <form accept-charset="utf-8" class="gsc-search-box" 
                onsubmit="return submit_search()">
            <table class="gsc-search-box" cellpadding="0" cellspacing="0"><tbody>
                <tr>
                  <td class="gsc-input">
                    <input id="search_autocomplete" class="gsc-input" type="text" size="33" autocomplete="off"
                      title="search developer docs" name="q"
                      value="search developer docs"
                      onFocus="search_focus_changed(this, true)"
                      onBlur="search_focus_changed(this, false)"
                      onkeydown="return search_changed(event, true, '../../')"
                      onkeyup="return search_changed(event, false, '../../')" />
                  <div id="search_filtered_div" class="no-display">
                      <table id="search_filtered" cellspacing=0>
                      </table>
                  </div>
                  </td>
                  <td class="gsc-search-button">
                    <input type="submit" value="Search" title="search" id="search-button" class="gsc-search-button" />
                  </td>
                  <td class="gsc-clear-button">
                    <div title="clear results" class="gsc-clear-button">&nbsp;</div>
                  </td>
                </tr></tbody>
              </table>
          </form>
      </div><!-- searchForm -->
  </div><!-- search -->
      </div><!-- headerRight -->
      <script type="text/javascript">
        <!--  
        changeTabLang(getLangPref());
        //-->
      </script>
  </div><!-- header -->

  <div class="g-section g-tpl-240" id="body-content">
    <div class="g-unit g-first" id="side-nav">
      <div id="devdoc-nav">
<ul>

  <li>
    <h2><span class="en">Android Basics</span>
        <span class="de" style="display:none">Einführung in Android</span>
        <span class="es" style="display:none">Información básica sobre Android</span>
        <span class="fr" style="display:none">Présentation d'Android</span>
        <span class="it" style="display:none">Nozioni di base su Android</span>
        <span class="ja" style="display:none">Android の基本</span>
        <span class="zh-CN" style="display:none">Android 基础知识</span>
        <span class="zh-TW" style="display:none">Android 簡介</span>
    </h2>
    <ul>
      <li><a href="../../guide/basics/what-is-android.html">
        <span class="en">What Is Android?</span>
        <span class="de" style="display:none">Was ist Android?</span>
        <span class="es" style="display:none">¿Qué es Android?</span>
        <span class="fr" style="display:none">Qu'est-ce qu'Android&nbsp;?</span>
        <span class="it" style="display:none">Che cos'è Android?</span>
        <span class="ja" style="display:none">Android とは</span>
        <span class="zh-CN" style="display:none">Android 是什么？</span>
        <span class="zh-TW" style="display:none">什麼是 Android？</span>
          </a></li>
      <li><a href="../../guide/topics/fundamentals.html">
        <span class="en">Application Fundamentals</span>
        <span class="de" style="display:none">Anwendungsgrundlagen</span>
        <span class="es" style="display:none">Fundamentos de las aplicaciones</span>
        <span class="fr" style="display:none">Principes de base des applications</span>
        <span class="it" style="display:none">Concetti fondamentali sulle applicazioni</span>
        <span class="ja" style="display:none">開発の基礎</span>
        <span class="zh-CN" style="display:none">应用程序基础</span>
        <span class="zh-TW" style="display:none">應用程式基本原理</span>
      </a></li>

  <!--  <li><a style="color:gray;">The Android SDK</a></li> -->
  <!--  <li><a style="color:gray;">Walkthrough for Developers</a></li> -->
      <!-- quick overview of what it's like to develop on Android -->
    </ul>
  </li>

  <li>
    <h2>
      <span class="en">Framework Topics</span>
      <span class="de" style="display:none">Framework-Themen</span>
      <span class="es" style="display:none">Temas sobre el framework</span>
      <span class="fr" style="display:none">Thèmes relatifs au framework</span>
      <span class="it" style="display:none">Argomenti relativi al framework</span>
      <span class="ja" style="display:none">フレームワーク トピック</span>
      <span class="zh-CN" style="display:none">框架主题</span>
      <span class="zh-TW" style="display:none">架構主題</span>
    </h2>
    <ul>
      <li class="toggle-list">
        <div><a href="../../guide/topics/fundamentals/activities.html">
          <span class="en">Activities</span>
        </a></div>
        <ul>
          <li><a href="../../guide/topics/fundamentals/fragments.html">
            <span class="en">Fragments</span>
          </a></li>
          <li><a href="../../guide/topics/fundamentals/loaders.html">
            <span class="en">Loaders</span>
          </a></li>
          <li><a href="../../guide/topics/fundamentals/tasks-and-back-stack.html">
            <span class="en">Tasks and Back Stack</span></a></li>
        </ul>
      </li>
      <li class="toggle-list">
        <div><a href="../../guide/topics/fundamentals/services.html">
          <span class="en">Services</span>
        </a></div>
        <ul>
          <li><a href="../../guide/topics/fundamentals/bound-services.html">
            <span class="en">Bound Services</span>
          </a></li>
        </ul>
      </li>
      <li><a href="../../guide/topics/providers/content-providers.html">
            <span class="en">Content Providers</span>
          </a></li>
      <li><a href="../../guide/topics/intents/intents-filters.html">
            <span class="en">Intents and Intent Filters</span>
          </a></li>
      <li><a href="../../guide/topics/fundamentals/processes-and-threads.html">
            <span class="en">Processes and Threads</span>
          </a></li>
    </ul>


    <ul>
      <li class="toggle-list">
        <div><a href="../../guide/topics/ui/index.html">
            <span class="en">User Interface</span>
          </a></div>
        <ul>
          <li><a href="../../guide/topics/ui/declaring-layout.html">
               <span class="en">XML Layouts</span>
              </a></li>
          <li><a href="../../guide/topics/ui/ui-events.html">
                <span class="en">Input Events</span>
              </a></li>
          <li><a href="../../guide/topics/ui/menus.html">
               <span class="en">Menus</span>
              </a></li>
          <li><a href="../../guide/topics/ui/actionbar.html">
               <span class="en">Action Bar</span>
              </a></li>
          <li><a href="../../guide/topics/ui/dialogs.html">
                <span class="en">Dialogs</span>
              </a></li>
          <li class="toggle-list">
            <div><a href="../../guide/topics/ui/notifiers/index.html">
                <span class="en">Notifications</span>
            </a></div>
            <ul>
              <li><a href="../../guide/topics/ui/notifiers/toasts.html">
                <span class="en">Toast Notifications</span>
              </a></li>
              <li><a href="../../guide/topics/ui/notifiers/notifications.html">
                <span class="en">Status Bar Notifications</span>
              </a></li>
            </ul>
          </li>
          <li><a href="../../guide/topics/ui/drag-drop.html">
                <span class="en">Drag and Drop</span>
              </a></li>
          <li><a href="../../guide/topics/ui/themes.html">
                <span class="en">Styles and Themes</span>
              </a></li>
          <li><a href="../../guide/topics/ui/custom-components.html">
                <span class="en">Custom Components</span>
              </a></li>
          <li><a href="../../guide/topics/ui/binding.html">
                <span class="en">Binding to Data with AdapterView</span>
              </a></li>
          <li><a href="../../guide/topics/ui/layout-objects.html">
                <span class="en">Common Layout Objects</span>
              </a></li>
          <li><a href="../../guide/topics/ui/how-android-draws.html">
                <span class="en">How Android Draws Views</span>
              </a></li>
        </ul>
      </li><!-- end of User Interface -->

      <li class="toggle-list">
        <div><a href="../../guide/topics/resources/index.html">
               <span class="en">Application Resources</span>
             </a></div>
        <ul>
          <li><a href="../../guide/topics/resources/providing-resources.html">
                <span class="en">Providing Resources</span>
              </a></li>
          <li><a href="../../guide/topics/resources/accessing-resources.html">
                <span class="en">Accessing Resources</span>
              </a></li>
          <li><a href="../../guide/topics/resources/runtime-changes.html">
                <span class="en">Handling Runtime Changes</span>
              </a></li>
          <li><a href="../../guide/topics/resources/localization.html">
                <span class="en">Localization</span>
              </a></li>
          <li class="toggle-list">
            <div><a href="../../guide/topics/resources/available-resources.html">
              <span class="en">Resource Types</span>
            </a></div>
            <ul>
              <li><a href="../../guide/topics/resources/animation-resource.html">Animation</a></li>
              <li><a href="../../guide/topics/resources/color-list-resource.html">Color State List</a></li>
              <li><a href="../../guide/topics/resources/drawable-resource.html">Drawable</a></li>
              <li><a href="../../guide/topics/resources/layout-resource.html">Layout</a></li>
              <li><a href="../../guide/topics/resources/menu-resource.html">Menu</a></li>
              <li><a href="../../guide/topics/resources/string-resource.html">String</a></li>
              <li><a href="../../guide/topics/resources/style-resource.html">Style</a></li>
              <li><a href="../../guide/topics/resources/more-resources.html">More Types</a></li>
            </ul>
          </li><!-- end of resource types -->
        </ul>
      </li><!-- end of app resources -->
      <li class="toggle-list">
        <div><a href="../../guide/topics/data/data-storage.html">
            <span class="en">Data Storage</span>
          </a></div>
          <ul>
            <li><a href="../../guide/topics/data/backup.html">
                <span class="en">Data Backup</span>
              </a>
            </li>
          </ul>
      </li>
      <li><a href="../../guide/topics/security/security.html">
            <span class="en">Security and Permissions</span>
          </a></li>
      <li class="toggle-list">
        <div><a href="../../guide/topics/manifest/manifest-intro.html">
          <span class="en">The AndroidManifest.xml File</span>
        </a></div>
        <ul>
          <li><a href="../../guide/topics/manifest/action-element.html">&lt;action&gt;</a></li>
          <li><a href="../../guide/topics/manifest/activity-element.html">&lt;activity&gt;</a></li>
          <li><a href="../../guide/topics/manifest/activity-alias-element.html">&lt;activity-alias&gt;</a></li>
          <li><a href="../../guide/topics/manifest/application-element.html">&lt;application&gt;</a></li>
          <li><a href="../../guide/topics/manifest/category-element.html">&lt;category&gt;</a></li>
          <li><a href="../../guide/topics/manifest/compatible-screens-element.html">&lt;compatible-screens&gt;</a></li>
          <li><a href="../../guide/topics/manifest/data-element.html">&lt;data&gt;</a></li>
          <li><a href="../../guide/topics/manifest/grant-uri-permission-element.html">&lt;grant-uri-permission&gt;</a></li>
          <li><a href="../../guide/topics/manifest/instrumentation-element.html">&lt;instrumentation&gt;</a></li>
          <li><a href="../../guide/topics/manifest/intent-filter-element.html">&lt;intent-filter&gt;</a></li>
          <li><a href="../../guide/topics/manifest/manifest-element.html">&lt;manifest&gt;</a></li>
          <li><a href="../../guide/topics/manifest/meta-data-element.html">&lt;meta-data&gt;</a></li>
          <li><a href="../../guide/topics/manifest/path-permission-element.html">&lt;path-permission&gt;</a></li>
          <li><a href="../../guide/topics/manifest/permission-element.html">&lt;permission&gt;</a></li>
          <li><a href="../../guide/topics/manifest/permission-group-element.html">&lt;permission-group&gt;</a></li>
          <li><a href="../../guide/topics/manifest/permission-tree-element.html">&lt;permission-tree&gt;</a></li>
          <li><a href="../../guide/topics/manifest/provider-element.html">&lt;provider&gt;</a></li>
          <li><a href="../../guide/topics/manifest/receiver-element.html">&lt;receiver&gt;</a></li>
          <li><a href="../../guide/topics/manifest/service-element.html">&lt;service&gt;</a></li>
          <li><a href="../../guide/topics/manifest/supports-gl-texture-element.html">&lt;supports-gl-texture&gt;</a></li>
          <li><a href="../../guide/topics/manifest/supports-screens-element.html">&lt;supports-screens&gt;</a></li><!-- ##api level 4## -->
          <li><a href="../../guide/topics/manifest/uses-configuration-element.html">&lt;uses-configuration&gt;</a></li>
          <li><a href="../../guide/topics/manifest/uses-feature-element.html">&lt;uses-feature&gt;</a></li> <!-- ##api level 4## -->
          <li><a href="../../guide/topics/manifest/uses-library-element.html">&lt;uses-library&gt;</a></li>
          <li><a href="../../guide/topics/manifest/uses-permission-element.html">&lt;uses-permission&gt;</a></li>
          <li><a href="../../guide/topics/manifest/uses-sdk-element.html">&lt;uses-sdk&gt;</a></li>
        </ul>
      </li><!-- end of the manifest file -->
    </ul>

    <ul>
    <li class="toggle-list">
        <div><a href="../../guide/topics/graphics/index.html">
            <span class="en">Graphics</span>
          </a><span class="new-child">new!</span></div>
        <ul>
          <li><a href="../../guide/topics/graphics/2d-graphics.html">
              <span class="en">Canvas and Drawables</span></a></li>
          <li><a href="../../guide/topics/graphics/hardware-accel.html">
              <span class="en">Hardware Acceleration</span></a>
            <span class="new">new!</span></li>
          <li><a href="../../guide/topics/graphics/opengl.html">
              <span class="en">OpenGL</span>
            </a><span class="new">updated</span></li>
        </ul>
      </li>
      <li class="toggle-list">
        <div><a href="../../guide/topics/graphics/animation.html">
            <span class="en">Animation</span>
          </a></div>
        <ul>
          <li><a href="../../guide/topics/graphics/prop-animation.html">
              <span class="en">Property Animation</span></a></li>
          <li><a href="../../guide/topics/graphics/view-animation.html">
              <span class="en">View Animation</span></a></li>
          <li><a href="../../guide/topics/graphics/drawable-animation.html">
              <span class="en">Drawable Animation</span></a></li>
        </ul>
      </li>
      <li class="toggle-list">
	        <div><a href="../../guide/topics/renderscript/index.html">
	            <span class="en">RenderScript</span>
	          </a></div>
	        <ul>
	          <li><a href="../../guide/topics/renderscript/graphics.html">
	                <span class="en">Graphics</span>
	              </a>
	          </li>
	          <li><a href="../../guide/topics/renderscript/compute.html">
	                <span class="en">Compute</span>
	              </a>
	          </li>
	        </ul>
  	  </li>

      <li class="toggle-list">
          <div><a href="../../guide/topics/media/index.html">
            <span class="en">Multimedia and Camera</span>
          </a><span class="new">updated</span></div>
          <ul>
            <li><a href="../../guide/topics/media/mediaplayer.html">
                  <span class="en">Media Playback</span></a>
                </li>
            <li><a href="../../guide/topics/media/jetplayer.html">
                  <span class="en">JetPlayer</span></a>
                </li>
            <li><a href="../../guide/topics/media/camera.html">
                  <span class="en">Camera</span></a>
                  <span class="new">new!</span>
                </li>
            <li><a href="../../guide/topics/media/audio-capture.html">
                  <span class="en">Audio Capture</span></a>
                </li>
          </ul>
      </li>
      <li>
        <a href="../../guide/topics/clipboard/copy-paste.html">
            <span class="en">Copy and Paste</span>
        </a></li>
  <!--<li class="toggle-list">
        <div><a style="color:gray;">Sensors</a></div>
          <ul>
            <li><a style="color:gray;">Camera</a></li>
            <li><a style="color:gray;">Compass</a></li>
            <li><a style="color:gray;">Accelerometer</a></li>
          </ul>
      </li> -->
      <li class="toggle-list">
        <div><a href="../../guide/topics/location/index.html">
               <span class="en">Location and Maps</span>
             </a></div>
        <ul>
          <li><a href="../../guide/topics/location/obtaining-user-location.html">
                <span class="en">Obtaining User Location</span>
              </a></li>
        </ul>
      </li>
  <!--<li class="toggle-list">
        <div><a style="color:gray;">Wireless Controls</a></div>
          <ul>
            <li><a style="color:gray;">Wi-Fi</a></li>
          </ul>
      </li> -->
  <!--<li><a style="color:gray;">Localization</a></li>  -->
      <li><a href="../../guide/topics/appwidgets/index.html">
            <span class="en">App Widgets</span></a>
          </li>
      <li><a href="../../guide/topics/wireless/bluetooth.html">
            <span class="en">Bluetooth</span></a>
          </li>
      <li><a href="../../guide/topics/nfc/index.html">
            <span class="en">Near Field Communication</span>
          </a></li>
      <li class="toggle-list">
          <div><a href="../../guide/topics/usb/index.html">
            <span class="en">USB</span></a>
          </div>
            <ul>
              <li><a href="../../guide/topics/usb/accessory.html">Accessory</a></li>
              <li><a href="../../guide/topics/usb/host.html">Host</a></li>
              <li><a href="../../guide/topics/usb/adk.html">Open Accessory Dev Kit</a></li>
            </ul>
          </li>

       <li><a href="../../guide/topics/network/sip.html">
            <span class="en">Session Initiation Protocol</span>
          </a></li>
      <li class="toggle-list">
        <div><a href="../../guide/topics/search/index.html">
            <span class="en">Search</span>
          </a></div>
          <ul>
            <li><a href="../../guide/topics/search/search-dialog.html">Creating a Search Interface</a></li>
            <li><a href="../../guide/topics/search/adding-recent-query-suggestions.html">Adding Recent Query Suggestions</a></li>
            <li><a href="../../guide/topics/search/adding-custom-suggestions.html">Adding Custom Suggestions</a></li>
            <li><a href="../../guide/topics/search/searchable-config.html">Searchable Configuration</a></li>
          </ul>
      </li>
      <li><a href="../../guide/topics/admin/device-admin.html">
            <span class="en">Device Administration</span></a>
      </li>
      <li class="toggle-list">
           <div>
                <a href="../../guide/topics/testing/index.html">
                   <span class="en">Testing</span>
               </a>
           </div>
           <ul>
              <li>
                <a href="../../guide/topics/testing/testing_android.html">
                <span class="en">Testing Fundamentals</span></a>
              </li>
              <li>
                <a href="../../guide/topics/testing/activity_testing.html">
                <span class="en">Activity Testing</span></a>
              </li>
              <li>
                <a href="../../guide/topics/testing/contentprovider_testing.html">
                <span class="en">Content Provider Testing</span></a>
              </li>
              <li>
                <a href="../../guide/topics/testing/service_testing.html">
                <span class="en">Service Testing</span></a>
              </li>
              <li>
                <a href="../../guide/topics/testing/what_to_test.html">
                <span class="en">What To Test</span></a>
              </li>
           </ul>
      </li>
    </ul>
  </li>

  <li>
    <h2>
      <span class="en">Android Market Topics</span>
    </h2>
    <ul>
      <li><a href="../../guide/publishing/licensing.html">
          <span class="en">Application Licensing</span></a>
      </li>
      <li class="toggle-list">
        <div><a href="../../guide/market/billing/index.html">
            <span class="en">In-app Billing</span></a>
        </div>
        <ul>
          <li><a href="../../guide/market/billing/billing_overview.html">
              <span class="en">In-app Billing Overview</span></a>
          </li>
          <li><a href="../../guide/market/billing/billing_integrate.html">
              <span class="en">Implementing In-app Billing</span></a>
          </li>
          <li><a href="../../guide/market/billing/billing_best_practices.html">
              <span class="en">Security and Design</span></a>
          </li>
          <li><a href="../../guide/market/billing/billing_testing.html">
              <span class="en">Testing In-app Billing</span></a>
          </li>
          <li><a href="../../guide/market/billing/billing_admin.html">
              <span class="en">Administering In-app Billing</span></a>
          </li>
          <li><a href="../../guide/market/billing/billing_reference.html">
              <span class="en">In-app Billing Reference</span></a>
          </li>
        </ul>
      </li>
      <li><a href="../../guide/appendix/market-filters.html">
          <span class="en">Market Filters</span></a>
      </li>
      <li><a href="../../guide/market/publishing/multiple-apks.html">
          <span class="en">Multiple APK Support</span></a>
      </li>
    </ul>
  </li>


  <li>
    <h2><span class="en">Developing</span>
               <span class="de" style="display:none">Entwicklung</span>
               <span class="es" style="display:none">Desarrollo</span>
               <span class="fr" style="display:none">Développement</span>
               <span class="it" style="display:none">Sviluppo</span>
               <span class="ja" style="display:none">開発</span>
               <span class="zh-CN" style="display:none">开发</span>
               <span class="zh-TW" style="display:none">開發</span>
    </h2>
    <ul>
  <!--<li><a href="">Developing for Android</a></li>
      signing, upgrading, selecting a package name, select device profile, touch, trackball, dpad available, etc. -->
      <li>
        <a href="../../guide/developing/index.html">
        <span class="en">Introduction</span></a>
      </li>

      <li class="toggle-list">
        <div>
           <a href="../../guide/developing/devices/index.html">
                <span class="en">Managing Virtual Devices</span>
            </a>
        </div>
        <ul>
          <li>
            <a href="../../guide/developing/devices/managing-avds.html">
              <span class="en">With AVD Manager</span>
            </a>
          </li>
          <li>
            <a href="../../guide/developing/devices/managing-avds-cmdline.html">
              <span class="en">From the Command Line</span>
            </a>
          </li>
          <li>
           <a href="../../guide/developing/devices/emulator.html">
                <span class="en">Using the Android Emulator</span>
            </a>
          </li>
        </ul>
      </li>
      <li>
        <a href="../../guide/developing/device.html">
          <span class="en">Using Hardware Devices</span>
        </a>
      </li>

      <li class="toggle-list">
        <div>
          <a href="../../guide/developing/projects/index.html">
            <span class="en">Managing Projects</span>
          </a>
        </div>
        <ul>
          <li>
            <a href="../../guide/developing/projects/projects-eclipse.html">
              <span class="en">From Eclipse with ADT</span>
            </a>
          </li>
          <li>
            <a href="../../guide/developing/projects/projects-cmdline.html">
                <span class="en">From the Command Line</span>
            </a>
          </li>
        </ul>
      </li>

      <li class="toggle-list">
        <div>
          <a href="../../guide/developing/building/index.html">
            <span class="en">Building and Running</span>
          </a>
        </div>
        <ul>
          <li><a href="../../guide/developing/building/building-eclipse.html">
            <span class="en">From Eclipse with ADT</span>
          </a></li>
          <li><a href="../../guide/developing/building/building-cmdline.html">
            <span class="en">From the Command Line</span></a></li>
        </ul>
      </li>

      <li class="toggle-list">
        <div>
          <a href="../../guide/developing/debugging/index.html">
            <span class="en">Debugging</span>
          </a>
        </div>
        <ul>
          <li>
            <a href="../../guide/developing/debugging/debugging-projects.html">
                <span class="en">From Eclipse with ADT</span>
            </a>
          </li>
          <li>
            <a href="../../guide/developing/debugging/debugging-projects-cmdline.html">
                <span class="en">From Other IDEs</span>
            </a>
          </li>
          <li>
            <a href="../../guide/developing/debugging/ddms.html">
              <span class="en">Using DDMS</span>
            </a>
          </li>
          <li>
            <a href="../../guide/developing/debugging/debugging-log.html">
                <span class="en">Reading and Writing Logs</span>
            </a>
          </li>
          <li>
            <a href="../../guide/developing/debugging/debugging-ui.html">
                <span class="en">Debugging and Profiling UIs</span>
            </a>
          </li>
          <li>
            <a href="../../guide/developing/debugging/debugging-tracing.html">
                <span class="en">Profiling with Traceview and dmtracedump</span>
            </a>
          </li>
          <li>
            <a href="../../guide/developing/debugging/debugging-devtools.html">
                <span class="en">Using the Dev Tools App</span>
            </a>
          </li>
        </ul>
      </li>

      <li class="toggle-list">
           <div>
                <a href="../../guide/developing/testing/index.html">
                   <span class="en">Testing</span>
               </a>
           </div>
           <ul>
              <li>
                <a href="../../guide/developing/testing/testing_eclipse.html">
                  <span class="en">From Eclipse with ADT</span>
                </a>
              </li>

              <li>
                <a href="../../guide/developing/testing/testing_otheride.html">
                  <span class="en">From Other IDEs</span>
                </a>
              </li>
           </ul>
         </li>

         <li class="toggle-list">
        <div><a href="../../guide/developing/tools/index.html">
            <span class="en">Tools</span>
          </a></div>
        <ul>
          <li><a href="../../guide/developing/tools/adb.html">adb</a></li>
          <li><a href="../../guide/developing/tools/adt.html">ADT</a></li>
          <li><a href="../../guide/developing/tools/android.html">android</a></li>
          <li><a href="../../guide/developing/tools/bmgr.html">bmgr</a>
          <li><a href="../../guide/developing/tools/dmtracedump.html">dmtracedump</a></li>
          <li><a href="../../guide/developing/tools/draw9patch.html">Draw
          9-Patch</a></li>
          <li><a href="../../guide/developing/tools/emulator.html">Emulator</a></li>
          <li><a href="../../guide/developing/tools/etc1tool.html">etc1tool</a></li>
          <li><a href="../../guide/developing/tools/hierarchy-viewer.html">Hierarchy Viewer</a></li>
          <li><a href="../../guide/developing/tools/hprof-conv.html">hprof-conv</a></li>
          <li><a href="../../guide/developing/tools/layoutopt.html">layoutopt</a></li>
          <li><a href="../../guide/developing/tools/logcat.html">logcat</a></li>
          <li><a href="../../guide/developing/tools/mksdcard.html">mksdcard</a></li>
          <li><a href="../../guide/developing/tools/monkey.html">Monkey</a></li>
          <li class="toggle-list">
            <div><a href="../../guide/developing/tools/monkeyrunner_concepts.html">
              <span class="en">monkeyrunner</span>
            </a></div>
            <ul>
              <li><a href="../../guide/developing/tools/MonkeyDevice.html">
                <span class="en">MonkeyDevice</span>
                </a></li>
              <li><a href="../../guide/developing/tools/MonkeyImage.html">
                <span class="en">MonkeyImage</span>
                </a></li>
              <li><a href="../../guide/developing/tools/MonkeyRunner.html">
                <span class="en">MonkeyRunner</span>
                </a></li>
            </ul>
          </li>
          <li><a href="../../guide/developing/tools/proguard.html">ProGuard</a></li>
          <li><a href="../../guide/developing/tools/adb.html#sqlite">sqlite3</a></li>
          <li><a href="../../guide/developing/tools/traceview.html">Traceview</a></li>
          <li><a href="../../guide/developing/tools/zipalign.html">zipalign</a></li>
        </ul>
      </li>
    </ul>
  </li>

  <li>
    <h2><span class="en">Publishing</span>
        <span class="de" style="display:none">Veröffentlichung</span>
        <span class="es" style="display:none">Publicación</span>
        <span class="fr" style="display:none">Publication</span>
        <span class="it" style="display:none">Pubblicazione</span>
        <span class="ja" style="display:none">公開</span>
        <span class="zh-CN" style="display:none">发布</span>
        <span class="zh-TW" style="display:none">發佈</span>
    </h2>
    <ul>
      <li><a href="../../guide/publishing/app-signing.html">
            <span class="en">Signing Your Applications</span>
            <span class="de" style="display:none">Signieren Ihrer Anwendungen</span>
            <span class="es" style="display:none">Firma de aplicaciones</span>
            <span class="fr" style="display:none">Attribution de votre signature <br />à vos applications</span>
            <span class="it" style="display:none">Firma delle applicazioni</span>
            <span class="ja" style="display:none">アプリケーションへの署名</span>
            <span class="zh-CN" style="display:none">应用程序签名</span>
            <span class="zh-TW" style="display:none">簽署應用程式</span>
          </a></li>
      <li><a href="../../guide/publishing/versioning.html">
            <span class="en">Versioning Your Applications</span>
            <span class="de" style="display:none">Versionsverwaltung für Ihre <br />Anwendungen</span>
            <span class="es" style="display:none">Versiones de las aplicaciones</span>
            <span class="fr" style="display:none">Attribution d'une version à vos applications</span>
            <span class="it" style="display:none">Controllo versioni delle applicazioni</span>
            <span class="ja" style="display:none">アプリケーションのバージョニング</span>
            <span class="zh-CN" style="display:none">应用程序版本控制</span>
            <span class="zh-TW" style="display:none">應用程式版本設定</span>
          </a></li>
      <li><a href="../../guide/publishing/preparing.html">
            <span class="en">Preparing to Publish</span>
            <span class="de" style="display:none">Vorbereitung auf die Veröffentlichung</span>
            <span class="es" style="display:none">Publicación de aplicaciones</span>
            <span class="fr" style="display:none">Préparation à la publication</span>
            <span class="it" style="display:none">Preparativi per la pubblicazione</span>
            <span class="ja" style="display:none">公開の準備</span>
            <span class="zh-CN" style="display:none">准备发布</span>
            <span class="zh-TW" style="display:none">準備發佈</span>
          </a></li>
      <li><a href="../../guide/publishing/publishing.html">
            <span class="en">Publishing on Android Market</span>
          </a></li>
    </ul>
  </li>

  <li>
    <h2><span class="en">Best Practices</span>
               <span class="de" style="display:none">Bewährte Verfahren</span>
               <span class="es" style="display:none">Prácticas recomendadas</span>
               <span class="fr" style="display:none">Meilleures pratiques</span>
               <span class="it" style="display:none">Best practice</span>
               <span class="ja" style="display:none">ベスト プラクティス</span>
               <span class="zh-CN" style="display:none">最佳实践</span>
               <span class="zh-TW" style="display:none">最佳實務</span>
    </h2>
    <ul>
      <li><a href="../../guide/practices/compatibility.html">
            <span class="en">Compatibility</span>
          </a></li>
      <li class="toggle-list">
        <div><a href="../../guide/practices/screens_support.html">
          <span class="en">Supporting Multiple Screens</span>
        </a></div>
        <ul>
          <li><a href="../../guide/practices/screens-distribution.html">
            <span class="en">Distributing to Specific Screens</span>
          </a></li>
          <li><a href="../../guide/practices/screen-compat-mode.html">
            <span class="en">Screen Compatibility Mode</span>
          </a></li>
          <li><a href="../../guide/practices/screens-support-1.5.html">
            <span class="en">Strategies for Android 1.5</span>
          </a></li>
        </ul>
      </li>
      <li><a href="../../guide/practices/optimizing-for-3.0.html">
            <span class="en">Optimizing Apps for Android 3.0</span>
          </a></li>
      <li class="toggle-list">
        <div><a href="../../guide/practices/ui_guidelines/index.html">
               <span class="en">UI Guidelines</span>
             </a></div>
        <ul>
          <li class="toggle-list">
            <div><a href="../../guide/practices/ui_guidelines/icon_design.html">
                   <span class="en">Icon Design <span class="new">updated</span></span>
                 </a></div>
            <ul>
              <li><a href="../../guide/practices/ui_guidelines/icon_design_launcher.html">
                    <span class="en">Launcher Icons <span class="new">updated</span></span>
                  </a></li>
              <li><a href="../../guide/practices/ui_guidelines/icon_design_menu.html">
                    <span class="en">Menu Icons</span>
                  </a></li>
              <li><a href="../../guide/practices/ui_guidelines/icon_design_action_bar.html">
                    <span class="en">Action Bar Icons <span class="new">new!</span></span>
                  </a></li>
              <li><a href="../../guide/practices/ui_guidelines/icon_design_status_bar.html">
                    <span class="en">Status Bar Icons <span class="new">updated</span></span>
                  </a></li>
              <li><a href="../../guide/practices/ui_guidelines/icon_design_tab.html">
                    <span class="en">Tab Icons</span>
                  </a></li>
              <li><a href="../../guide/practices/ui_guidelines/icon_design_dialog.html">
                    <span class="en">Dialog Icons</span>
                  </a></li>
              <li><a href="../../guide/practices/ui_guidelines/icon_design_list.html">
                    <span class="en">List View Icons</span>
                  </a></li>
            </ul>
          </li>
          <li><a href="../../guide/practices/ui_guidelines/widget_design.html">
                <span class="en">App Widget Design <span class="new">updated</span></span>
              </a></li>
          <li><a href="../../guide/practices/ui_guidelines/activity_task_design.html">
                <span class="en">Activity and Task Design</span>
              </a></li>
          <li><a href="../../guide/practices/ui_guidelines/menu_design.html">
                <span class="en">Menu Design</span>
              </a></li>
        </ul>
      </li>
      </ul>
      <ul>
      <li><a href="../../guide/practices/design/accessibility.html">
            <span class="en">Designing for Accessibility</span>
          </a></li>
      <li class="toggle-list">
        <div><a href="../../guide/practices/design/performance.html">
            <span class="en">Designing for Performance</span>
          </a></div>
        <ul>
          <li><a href="../../guide/practices/design/jni.html">
                <span class="en">JNI Tips</span>
              </a></li>
        </ul>
      </li>
      <li><a href="../../guide/practices/design/responsiveness.html">
            <span class="en">Designing for Responsiveness</span>
          </a></li>
      <li><a href="../../guide/practices/design/seamlessness.html">
            <span class="en">Designing for Seamlessness</span>
          </a></li>
    </ul>
  </li>

  <li>
    <h2><span class="en">Web Applications</span>
    </h2>
    <ul>
      <li><a href="../../guide/webapps/index.html">
            <span class="en">Web Apps Overview</span>
          </a></li>
      <li><a href="../../guide/webapps/targeting.html">
            <span class="en">Targeting Screens from Web Apps</span>
          </a></li>
      <li><a href="../../guide/webapps/webview.html">
            <span class="en">Building Web Apps in WebView</span>
          </a></li>
      <li><a href="../../guide/webapps/debugging.html">
            <span class="en">Debugging Web Apps</span>
          </a></li>
      <li><a href="../../guide/webapps/best-practices.html">
            <span class="en">Best Practices for Web Apps</span>
          </a></li>
    </ul>
  </li>

  <li>
    <h2><span class="en">Appendix</span>
               <span class="de" style="display:none">Anhang</span>
               <span class="es" style="display:none">Apéndice</span>
               <span class="fr" style="display:none">Annexes</span>
               <span class="it" style="display:none">Appendice</span>
               <span class="ja" style="display:none">付録</span>
               <span class="zh-CN" style="display:none">附录</span>
               <span class="zh-TW" style="display:none">附錄</span>
    </h2>
    <ul>
      <li><a href="../../guide/appendix/api-levels.html">
            <span class="en">Android API Levels</span>
          </a></li>
      <li><a href="../../guide/appendix/install-location.html">
            <span class="en">App Install Location</span>
          </a></li>
      <li><a href="../../guide/appendix/media-formats.html">
            <span class="en">Supported Media Formats <span class="new">updated</span></span>
          </a></li>
      <li><a href="../../guide/appendix/g-app-intents.html">
            <span class="en">Intents List: Google Apps</span>
          </a></li>
      <li><a href="../../guide/developing/tools/aidl.html">AIDL</a></li>
      <li><a href="../../guide/appendix/glossary.html">
            <span class="en">Glossary</span>
          </a></li>
    </ul>
  </li>

</ul>

<script type="text/javascript">
<!--
    buildToggleLists();
    changeNavLang(getLangPref());
//-->
</script>

      </div>
    </div> <!-- end side-nav -->
    <script>
      addLoadEvent(function() {
        scrollIntoView("devdoc-nav");
        });
    </script>




<div class="g-unit" id="doc-content"><a name="top"></a>

<div id="jd-header" class="guide-header">
  <span class="crumb">
    &nbsp;
    
  </span>
<h1>Using Hardware Devices</h1>
</div>

  <div id="jd-content">

    <div class="jd-descr">
    <div id="qv-wrapper">
<div id="qv">
  <h2>In this document</h2>
  <ol>
    <li><a href="#setting-up">Setting up a Device for Development</a>
      <ol>
        <li><a href="#VendorIds">USB Vendor IDs</a></li>
      </ol>
    </li>
  </ol>
  <h2>See also</h2>
  <ol>
    <li><a href="../../sdk/win-usb.html">Google USB Driver</a></li>
    <li><a href="../../sdk/oem-usb.html">OEM USB Drivers</a></li>
  </ol>
</div>
</div>

<p>When building a mobile application, it's important that you always test your application on a
real device before releasing it to users. This page describes how to set up your development
environment and Android-powered device for testing and debugging on the device.</p>

<p>You can use any Android-powered device as an environment for running,
debugging, and testing your applications. The tools included in the SDK make it easy to install and
run your application on the device each time you compile. You can install your application on the
device directly from Eclipse or from the command line with ADB. If
you don't yet have a device, check with the service providers in your area to determine which
Android-powered devices are available.</p>

<p>If you want a SIM-unlocked phone, then you might consider either an Android Dev Phone or the
Google Nexus S. These are SIM-unlocked so that you can use them on any GSM network using a SIM
card. The Android Dev Phones also feature an unlocked bootloader so you can install custom system
images (great for developing and installing custom versions of the Android platform). To find a
a place you can purchase the Nexus S, visit <a
href="http://www.google.com/phone/detail/nexus-s">google.com/phone</a>. To purchase an Android
Dev Phone, see the <a href="http://market.android.com/publish">Android Market</a> site
(requires a developer account).</p>

<p class="note"><strong>Note:</strong> When developing on a device, keep in mind that you should
still use the <a
href="../../guide/developing/devices/emulator.html">Android emulator</a> to test your
application
on configurations that are not equivalent to those of your real device. Although the emulator
does not allow you to test every device feature (such as the accelerometer), it does
allow you to verify that your application functions properly on different versions of the Android
platform, in different screen sizes and orientations, and more.</p>


<h2 id="setting-up">Setting up a Device for Development</h2>

<p>With an Android-powered device, you can develop and debug your Android applications just as you
would on the emulator. Before you can start, there are just a few things to do:</p>

<ol>
  <li>Declare your application as "debuggable" in your Android Manifest.
    <p>In Eclipse, you can do this from the <b>Application</b> tab when viewing the Manifest
    (on the right side, set <b>Debuggable</b> to <em>true</em>). Otherwise, in the
<code>AndroidManifest.xml</code>
    file, add <code>android:debuggable="true"</code> to the <code>&lt;application></code>
element.</p>
  </li>
  <li>Set up your device to allow installation of non-Market applications. <p>On
the device, go to <strong>Settings > Applications</strong> and enable

<strong>Unknown sources</strong>.</p>
  
  </li>
  <li>Turn on "USB Debugging" on your device.
    <p>On the device, go to <strong>Settings > Applications > Development</strong>
    and enable <strong>USB debugging</strong>.</p>
  </li>
  <li>Set up your system to detect your device.
    <ul>
      <li>If you're developing on Windows, you need to install a USB driver
      for adb. If you're using an Android Developer Phone (ADP), Nexus One, or Nexus S,
      see the <a href="../../sdk/win-usb.html">Google Windows USB
      Driver</a>. Otherwise, you can find a link to the appropriate OEM driver in the
  <a href="../../sdk/oem-usb.html">OEM USB Drivers</a> document.</li>
      <li>If you're developing on Mac OS X, it just works. Skip this step.</li>
      
      <li>If you're developing on Ubuntu Linux, you need to add a <a
href="http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html">
<code>udev</code></a> 
rules file that contains a USB configuration for each type of device
you want to use for development. In the rules file, each device manufacturer
is identified by a unique vendor ID, as specified by the
<code>ATTR{idVendor}</code> property. For a list of vendor IDs, see  <a
href="#VendorIds">USB Vendor IDs</a>, below. To set up device detection on
Ubuntu Linux:

        <ol type="a">
          <li>Log in as root and create this file:
            <code>/etc/udev/rules.d/51-android.rules</code></span>.
            <p>Use this format to add each vendor to the file:<br/>
              <code>SUBSYSTEM==&quot;usb&quot;, ATTR{idVendor}==&quot;0bb4&quot;, MODE=&quot;0666&quot;, GROUP=&quot;plugdev&quot;</code>
              <br /><br />
              
              In this example, the vendor ID is for HTC. The <code>MODE</code>
assignment specifies read/write permissions, and <code>GROUP</code> defines
which Unix group  owns the device node. </p>
            
            <p class="note"><strong>Note:</strong> The rule syntax
may vary slightly depending on your  environment. Consult the <code>udev</code>
documentation for your system as needed. For an overview of rule syntax, see
this guide to <a
href="http://www.reactivated.net/writing_udev_rules.html">writing udev
rules</a>.</p>
          </li>
          <li>Now execute:<br/>
            <code>chmod a+r /etc/udev/rules.d/51-android.rules</code>
          </li>
        </ol>
      </li>
    </ul>
  </li>
</ol>

<p>You can verify that your device is connected by executing <code>adb
devices</code> from your SDK <code>platform-tools/</code> directory. If connected,
you'll see the device name listed as a "device."</p>

<p>If using Eclipse, run or debug your application as usual. You will be
presented with a <b>Device Chooser</b> dialog that lists the available
emulator(s) and connected device(s). Select the device upon which you want to
install and run the application.</p>

<p>If using the <a href="../../guide/developing/tools/adb.html">Android
Debug Bridge</a> (adb), you can issue commands with the <code>-d</code> flag to
target your connected device.</p>

<h3 id="VendorIds">USB Vendor IDs</h3>

<p>This table provides a reference to the vendor IDs needed in order to add USB
device support on Linux. The USB Vendor ID is the value given to the
<code>ATTR{idVendor}</code> property in the rules file, as described 
above.</p>

<table>
  <tr>
    <th>Company</th><th>USB Vendor ID</th></tr>
  <tr>
    <td>Acer</td>
    <td><code>0502</code></td>
  </tr>
  <tr>
    <td>ASUS</td>
    <td><code>0B05</code></td>
  </tr>
  <tr>
    <td>Dell</td>
    <td><code>413C</code></td>
  </tr>
  <tr>
    <td>Foxconn</td>
    <td><code>0489</code></td>
  </tr>
  <tr>
    <td>Garmin-Asus</td>
    <td><code>091E</code></td>
  </tr>
  <tr>
    <td>Google</td>
    <td><code>18D1</code></td>
  </tr>
  <tr>
    <td>HTC</td>
    <td><code>0BB4</code></td>
  </tr>
  <tr>
    <td>Huawei</td>
    <td><code>12D1</code></td>
  </tr>
  <tr>
    <td>K-Touch</td>
    <td><code>24E3</code></td>
  </tr>
  <tr>
    <td>KT Tech</td>
    <td><code>2116</code></td>
  </tr>
  <tr>
    <td>Kyocera</td>
    <td><code>0482</code></td>
  </tr>
  <tr>
    <td>Lenevo</td>
    <td><code>17EF</code></td>
  </tr>
  <tr>
    <td>LG</td>
    <td><code>1004</code></td>
  </tr>
  <tr>
    <td>Motorola</td>
    <td><code>22B8</code></td>
  </tr>
  <tr>
    <td>NEC</td>
    <td><code>0409</code></td>
  </tr>
  <tr>
    <td>Nook</td>
    <td><code>2080</code></td>
  </tr>
  <tr>
    <td>Nvidia</td>
    <td><code>0955</code></td>
  </tr>
  <tr>
    <td>OTGV</td>
    <td><code>2257</code></td>
  </tr>
  <tr>
    <td>Pantech</td>
    <td><code>10A9</code></td>
  </tr>
  <tr>
    <td>Pegatron</td>
    <td><code>1D4D</code></td>
  </tr>
  <tr>
    <td>Philips</td>
    <td><code>0471</code></td>
  </tr>
  <tr>
    <td>PMC-Sierra</td>
    <td><code>04DA</code></td>
  </tr>
  <tr>
    <td>Qualcomm</td>
    <td><code>05C6</code></td>
  </tr>
  <tr>
    <td>SK Telesys</td>
    <td><code>1F53</code></td>
  </tr>
  <tr>
    <td>Samsung</td>
    <td><code>04E8</code></td>
  </tr>
  <tr>
    <td>Sharp</td>
    <td><code>04DD</code></td>
  </tr>
  <tr>
    <td>Sony Ericsson</td>
    <td><code>0FCE</code></td>
  </tr>
  <tr>
    <td>Toshiba</td>
    <td><code>0930</code></td>
  </tr>
  <tr>
    <td>ZTE</td>
    <td><code>19D2</code></td>
  </tr>
</table>

    </div>

  <a href="#top" style="float:right">&uarr; Go to top</a>
  
  </div>

<div id="footer">


  <div id="copyright">
    
  Except as noted, this content is licensed under <a
  href="http://www.apache.org/licenses/LICENSE-2.0">Apache 2.0</a>. 
  For details and restrictions, see the <a href="../../license.html">
  Content License</a>.
  </div>
  <div id="build_info">
    
  Android 4.0&nbsp;r1 - 17 Oct 2011 18:17

  </div>

  <div id="footerlinks">
    
  <p>
    <a href="http://www.android.com/terms.html">Site Terms of Service</a> -
    <a href="http://www.android.com/privacy.html">Privacy Policy</a> -
    <a href="http://www.android.com/branding.html">Brand Guidelines</a>
  </p>
  </div>

</div> <!-- end footer -->

</div><!-- end doc-content -->

</div> <!-- end body-content --> 

<script type="text/javascript">
init(); /* initialize android-developer-docs.js */
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
var pageTracker = _gat._getTracker("UA-5831155-1");
pageTracker._trackPageview();
</script>

</body>
</html>



